JPS55155598A - Overexcitation restricting device for generator - Google Patents

Overexcitation restricting device for generator

Info

Publication number
JPS55155598A
JPS55155598A JP6340179A JP6340179A JPS55155598A JP S55155598 A JPS55155598 A JP S55155598A JP 6340179 A JP6340179 A JP 6340179A JP 6340179 A JP6340179 A JP 6340179A JP S55155598 A JPS55155598 A JP S55155598A
Authority
JP
Japan
Prior art keywords
generator
field current
overexcitation
voltage
allowable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP6340179A
Other languages
Japanese (ja)
Other versions
JPH0318440B2 (en
Inventor
Tsutomu Yamada
Masaru Shimomura
Junji Sofue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6340179A priority Critical patent/JPS55155598A/en
Publication of JPS55155598A publication Critical patent/JPS55155598A/en
Publication of JPH0318440B2 publication Critical patent/JPH0318440B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

PURPOSE:To enable the operation of a generator up to the full extent of its capability and to lessen the shock generated when an overexcitation is restricted by changing an allowable field current value in proportion to an inner-cooling gas compression and also by allowing a short time overexcitation using a primary delaying circuit. CONSTITUTION:A set point of an allowable field current value is obtained with a circuit 12 by adding the base quantity Vb established by a setting device 11 to a voltage Vg in proportion to the inner-cooling gas compression of a generator 1 detected by a converter 10. Then the voltage of the generator 1 is detected by a relay 25, and in the case where the generator voltage is above +5% and the field current is in excess of the allowable value, the output of a deviation detector 8 is immediately given to an AVR4 by the relay 25 which has been energized by the output of a comparator 24 through the intermediary of an arithmetic operational amplifier 20 and the field current is restricted. In the case where the system voltage drops in spite of having a normal generator voltage, a detector 13 detects the excessive field current, while a timer 14 is energized and when a contact 15a indicates an ''ON'' position after the set time, an overexcitation restricting signal is given to the AVR4 through the primary delaying circuit which is consisted of a resistance 22 and a condenser 21.
JP6340179A 1979-05-21 1979-05-21 Overexcitation restricting device for generator Granted JPS55155598A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6340179A JPS55155598A (en) 1979-05-21 1979-05-21 Overexcitation restricting device for generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6340179A JPS55155598A (en) 1979-05-21 1979-05-21 Overexcitation restricting device for generator

Publications (2)

Publication Number Publication Date
JPS55155598A true JPS55155598A (en) 1980-12-03
JPH0318440B2 JPH0318440B2 (en) 1991-03-12

Family

ID=13228240

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6340179A Granted JPS55155598A (en) 1979-05-21 1979-05-21 Overexcitation restricting device for generator

Country Status (1)

Country Link
JP (1) JPS55155598A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5111117A (en) * 1974-07-18 1976-01-29 Tokyo Shibaura Electric Co Dokihatsudenkino seigyosochi
JPS5373314A (en) * 1976-12-10 1978-06-29 Mitsubishi Electric Corp Excessive excitation limitting device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5111117A (en) * 1974-07-18 1976-01-29 Tokyo Shibaura Electric Co Dokihatsudenkino seigyosochi
JPS5373314A (en) * 1976-12-10 1978-06-29 Mitsubishi Electric Corp Excessive excitation limitting device

Also Published As

Publication number Publication date
JPH0318440B2 (en) 1991-03-12

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